JPS5834710Y2 - Flexible wiring board connector - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a connector for flexible wiring boards that can easily and reliably connect flexible wiring boards to each other.

With the miniaturization of electronic circuit devices, flexible wiring boards are increasingly used for interconnecting rigid printed wiring boards (hereinafter referred to as rigid wiring boards) that connect circuit elements. Increasingly, mutual connections must be made using connectors.

Therefore, conventional connectors for connecting rigid wiring boards and flexible wiring boards have been leaked, but with conventional connectors, it is difficult to insert and connect thin and flexible flexible wiring boards, and the connection operation is troublesome and time-consuming. It is not preferable due to such drawbacks.

Therefore, the present inventor proposed a connector having the following configuration, for example, which can connect flexible wiring boards with each other with a simple operation.

One of them is, for example, as shown in the exploded perspective view, the perspective view showing the connection state, and the cross-sectional side view shown in FIGS. 1a, l) and c, a conductive part 3',
After placing the flexible wiring boards 3 and 4 so that they are in contact with each other, the tips of the spring pieces 6 of the holding plate 5 are inserted and locked into the long holes 7 for insertion of wiring boards in the housing 1, Further, the common board portion 8 of the spring piece is locked to the locking protrusion 10 of the housing 1 by the locking portion 9, and the conductive part installation portion of the wiring boards 3, 4 is fixed to the wiring board positioning recess 2 by each curved spring piece 6. Connections are made by pressing against the surface.

The other one is, for example, as shown in the exploded perspective view, the perspective view showing the connected state, and the cross-sectional side view shown in FIGS. First and second holding plates 5, 5' are placed on the installation parts of the conductive parts 3', 4' of the flexible wiring boards 3, 4 placed in the same manner as above.
are located alternately every other spring piece 6, 6', and the tips 6'', 6'' of each spring piece 6, 6' are engaged by the lower surface of the common base plate part 8, 8' of the mating spring piece. 1. Common board portions 8, 8 of second holding plates 5, 5'
' is connected to the locking protrusion 10 of the housing 1 by the locking parts 9, 9'.
．． 10' for connection.

This type of connection, in which the conductive part installation part of the flexible wiring board is pressure-contacted to the housing surface using a spring piece, has a simple structure because it has a small number of parts, and what's more, it only needs to lock the holding plate to the housing. The connection operation is simple, and there are no drawbacks of other conventional connectors, such as the inability to insert a thin and flexible flexible wiring board or the troublesome connection operation.

However, on the other hand, since the spring force of the spring piece is limited, there is a drawback that the wiring board is easily pulled out by external force.

For example, as shown in FIG. 1, semi-cylindrical positioning posts 11 are provided on the left and right sides of the wiring board positioning recess 2 of the housing 1, and also on the left and right ends of the flexible wiring boards 3 and 4, respectively. semicircular cutout 12.1 for
3 is provided and the two are fitted together to prevent the two from being pulled out.

However, since flexible wiring boards are thin and flexible, they often bend easily and become unlatched when an external force is applied, making it insufficient to prevent them from being pulled out.

The purpose of this proposal is to provide a connector that ensures the prevention of the wiring board being pulled out due to external force in the above-mentioned type of connector, and also ensures the mutual connection of flexible wiring boards. Explain details.

Fig. 3 is a perspective view of the main parts of the embodiment of the present invention, and Fig. 4 is a cross-sectional side view showing the connection state (the same reference numerals as in Figs. 1 and 2 indicate the same parts), which are the features of the present invention. The point lies in the following.

That is, at the same time, a pressure contact corner 14 of the wiring board is provided in the width direction on the surface of the wiring board positioning recess 2 of the housing 1 by a groove, a protrusion, etc.
, 4 are pressed against each other, the spring piece 6 is curved 15.

In the example shown in FIG. 3a, a square groove 16 is provided along the entire length of the wiring board positioning recess 2 in the width direction, and two pressure-welding corner parts 14 are formed cascaded in the insertion direction of the flexible wiring board 3.4. The downwardly curved portion 15 of the spring piece 6 is positioned on top of this, and the fourth
This is an example in which flexible wiring boards 3 and 4 are press-contacted to two press-contact corners 14, respectively, as shown in FIG.

In addition, one or more (two in the figure) chevron-shaped protrusions 17 are provided, and the tops of the protrusions 17 are used as press-contact corner portions 14, and the wiring boards 3, 4 are connected to the curved portions 15 of the spring pieces as shown in FIG. This is an example of pressure contact.

In addition, in the example shown in FIG. 3C, one square bar-shaped projection 18 is provided, and the upwardly curved portion 15 provided on the spring piece 6 allows the corner portions of the projection 17 to be pressed against both shoulders as shown in FIG. 4C. This is an example in which flexible wiring boards 3 and 4 are pressed into contact with 14.

Further, the example shown in FIG. 3d has a square groove 16 and a chevron-shaped protrusion 17,
As shown in FIG. 4d, this is an example in which the flexible wiring boards 3 and 4 are pressed against the four press-contact corner portions 14 by two curved portions 15, and various other modifications are possible.

With this configuration, the flexible wiring boards 3 and 4 to be connected are pressed against the pressure welding corner part 14 by the spring force of the spring piece 6, so that the surface of the wiring board positioning part 2, which is flat as in the conventional case, Directly attach a thin flat flexible wiring board 3 to
.

In addition, as a result, the contact force between the conductive parts 3' and 4' of the wiring boards 3 and 4 becomes stronger, and as the number of press-contact corners increases, the resistance to external pulling force and the contact force increase. .

Therefore, according to the present invention, it is possible to provide a connector for a flexible wiring board that has a structure that can reliably connect the flexible wiring boards to each other and that is easy to connect, with less fear of the flexible wiring board being pulled out by external force.

[Brief explanation of drawings]

Fig. 1 a, b, C1 Fig. 2 a, l), c is an exploded perspective view of a conventional connector, a perspective view and a sectional side view showing the state when connected, Fig. 3 a, l), c, d and Figure 4 a, l),
c and d are a perspective view and a sectional side view showing a connected state of an embodiment of the present invention. 1...Housing, 2...Wiring board positioning recess, 7...Elongated hole for wiring board insertion, 9...
...Locking part, 3, 4...Flexible wiring board, 3', 4'...Conductive part, 5.5'...
・Press plate, 6.6'...Spring piece, 7...
Elongated hole for wiring board insertion, 8... Common board part, 9, 1
0...Locking part, 11...Positioning pillar,
12.13...Positioning notch, 14...
...Wiring board pressure welding corner, 16, 17.18... Square groove for forming pressure welding corner, chevron-shaped protrusion, square rod-like protrusion, 15...
...Spring front curved part.

Claims (1)

[Scope of utility model registration request] A connector for a flexible wiring board comprising a housing and a holding plate for pressure-welding a flexible wiring board to be connected, which is latched to the housing and placed on the housing surface by means of a spring piece thereof, to the housing surface. The spring piece is provided with a corner portion for press-fitting the wiring board, and a curved portion for pressing the flexible wiring board against the corner portion for press-fitting the wiring board is provided to prevent the wiring board from being pulled out by external force and to ensure a reliable connection. Connector for flexible wiring board.